These sharks use unique molecules to glow green
In the depths of the sea, certain shark species transform the ocean's blue light into a bright green color that only other sharks can...
Nanowire arrays could improve solar cells
Transparent electrodes are a critical component of solar cells and electronic displays. To collect electricity in a solar cell or inject electricity for a...
Researchers discover oldest fossil forest in Asia
The Devonian period, which was 419 million to 359 million years ago, is best known for Tiktaalik, the lobe-finned fish that is often portrayed...
A key piece to understanding how quantum gravity affects low-energy physics
Researchers have, for the first time, identified the sufficient and necessary conditions that the low-energy limit of quantum gravity theories must satisfy to preserve...
Why humans in Africa fled to the mountains during the last ice age
People in Ethiopia did not live in low valleys during the last ice age. Instead they lived high up in the inhospitable Bale Mountains....
An 88 percent decline in large freshwater animals
Rivers and lakes cover just about one percent of Earth's surface, but are home to one third of all vertebrate species worldwide. At the...
Evidence found for cloaked black hole in early universe
A group of astronomers, including Penn State scientists, has announced the likely discovery of a highly obscured black hole existing only 850 million years...
Earth’s last magnetic field reversal took far longer than once thought
Earth's magnetic field seems steady and true—reliable enough to navigate by.
Yet, largely hidden from daily life, the field drifts, waxes and wanes. The magnetic North...
Dark matter may be older than the big bang, study suggests
Dark matter, which researchers believe make up about 80% of the universe's mass, is one of the most elusive mysteries in modern physics. What...
Astronomers reveal true colors of evolving galactic beasts
Astronomers have identified a rare moment in the life of some of the universe's most energetic objects. Quasars were first observed 60 years ago,...
A whopping ‘squawkzilla’: Meet ‘Hercules’—the giant parrot that dwarfs its modern cousins
Australasian palaeontologists have discovered the world's largest parrot, standing up to 1m tall with a massive beak able to crack most food sources.
The new...
